CN100384503C - Pulp stabilisation apparatus for a thickener - Google Patents

Pulp stabilisation apparatus for a thickener Download PDF

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Publication number
CN100384503C
CN100384503C CNB038063158A CN03806315A CN100384503C CN 100384503 C CN100384503 C CN 100384503C CN B038063158 A CNB038063158 A CN B038063158A CN 03806315 A CN03806315 A CN 03806315A CN 100384503 C CN100384503 C CN 100384503C
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CN
China
Prior art keywords
rake
baffle plate
separator
sword
jar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB038063158A
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Chinese (zh)
Other versions
CN1642610A (en
Inventor
戴维·J·B·泰勒
杰弗里·V·贝尔克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Outotec Oyj
Original Assignee
Outokumpu Technology Oyj
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Publication of CN1642610A publication Critical patent/CN1642610A/en
Application granted granted Critical
Publication of CN100384503C publication Critical patent/CN100384503C/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/245Discharge mechanisms for the sediments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042Baffles or guide plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02Settling tanks with single outlets for the separated liquid
    • B01D21/04Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18Construction of the scrapers or the driving mechanisms for settling tanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/2405Feed mechanisms for settling tanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/2427The feed or discharge opening located at a distant position from the side walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/2444Discharge mechanisms for the classified liquid

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Centrifugal Separators (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The invention provides a flotation device including a thickening tank (1) having rightcylindrical sidewalls and a downwardly sloping frusto-conical floor. A drive shaft (2) is centrally rotatably mounted within the tank. Each one of a plurality of rake arms (3) is fixedly connected to the drive shaft and extends radially outwardly, substantially parallel to the tank floor. Each arm supports an array of blades (4) extending axially into the tank. An array of baffles in the form of rectilinear baffle plates (5), fixed relative to the tank, extends axially into the tank in complementary alternate radially spaced relationship with the blades (4). The baffle plates are located within the swept volume of the blades to retard fluid rotation in response to the rotation of the rake. A diametrical service bridge (6) is fixedly connected to the tank for mounting the baffle plates.

Description

The slurry stabilizing equipment that is used for inspissator
Invention field
The present invention relates to a kind of separator that is used for suspension and slurry, relate in particular to a kind of improved inspissator.It mainly is to separate ore pulp and develop from suspension in order to be used for, and will be described hereinafter with reference to this application.Yet, will be appreciated that the present invention is not limited in the application of this specific area.
Background of invention
Hereinafter the discussion of the prior art is in order to propose the present invention in suitable technical background, and can make its importance obtain correct understanding.Yet unless clearly be shown on the contrary, any prior art of quoting in this manual all should not be construed as admits that this technology is well-known, or constitutes the part of the conventional, well-known general knowledge of this area.
As a kind of mode of separate out suspended slurry, inspissator is known.They are generally used for mineral processing and extraction field, and other industry, such as papermaking.
Known inspissator generally includes concentration tank and feed pond.Described feed pond comprises the chamber with the outlet that is used to receive the inlet of feed fluid and is used for being communicated with described jar of fluid.In use, generation flocculation in described jar, thus the higher slurry of density is tending towards form the slurry bed that concentrates, and the lower wash of density being offset to described jar top to described pot bottom precipitation.
Described feed pond is used to reduce the disturbance of the feed streams that enters, and flocculant can be sneaked in the liquid, and in treated fluid discharge before the concentration tank, make the reaction between flocculant and the reactant that enough time of staying be arranged.The structure of described feed pond has also promoted to flow into from its outlet the even distribution of the liquid of concentration tank.
Described concentration tank can comprise the rake that is rotatably mounted.Described rake is installed on the driving shaft of centrally-located usually, is driven by motor and corresponding gear-box.In a plurality of rake arms that radially extend each all is firmly attached on the described rake, and supports the rake sword that row connect securely.Described rake sword extend axially into described jar in, thereby when rake rotates, described rake sword is an inswept jar interior fluid.This sweeping sheared the slurry particle, discharges the water of catching, and water rises to the surface through the material that is sheared, and solid is deposited on the denser thickened pulp bed.This technology is called " dehydration " in the art.Described sweeping also harrows precipitated solid to a jar center, and said solid is discharged from.
Yet opposite with its expectation purpose, in fact this rake tends to promote the material of all or part of precipitation on every side, thereby hinders the existing in fact function that helps dewatering process and precipitated solid is harrowed the center emission point.This state is called " circulatory motion " in the art, and hinders the desirable thickened pulp bed uniformly of formation.
The objective of the invention is to overcome or improve one or more defective of the prior art basically, or a kind of useful alternative is provided at least.
Summary of the invention
According to the present invention, a kind of separator is provided, comprise and be generally columniform concentration tank, with the rake that is installed in rotation in described jar, described rake comprises a plurality of rake arms that radially extend, each rake arm comprise row extend into described jar in isolated rake sword, described separator also comprises the retaining device that is used to slow down the fluid rotation that the rotation with described rake in described jar produces.
Preferably, described separator is suitable for use as the inspissator of mineral suspensions and slurry.
Preferably, described retaining device comprises that row are fixing and extend generally axially into baffle plate in described jar with respect to described jar.
Preferably, described baffle plate is positioned at each centre to the rake sword, and described baffle plate and rake sword are mainly arranged with the radially spaced relation that replaces.
Preferably, described baffle plate is taked between the adjacent rake sword and the baffle forms of the essentially rectangular in the swept volume of rake.
In another embodiment, described baffle plate can be made by the plate that is generally triangle or other geometries of the rake sword complementation of the analogous shape made from rod, line, sheet or plate.
In another embodiment, described baffle plate is taked effectively continuous baffle forms, and this form is provided by the shutter configuration that comprises the chain, rod, cable or the rope that roughly radially extend across described jar.
Preferably, described rake is usually located near the described tank bottom, and described rake sword roughly extends upward towards described flow surface.In this case, preferably, described baffle plate is positioned at the top of described rake, and runs through swept volume and extension downwards.
In a preferred embodiment, described device comprises the bridge of fixing and radially extend across described concentration tank with respect to described concentration tank, and described baffle plate is installed securely, and extends down in the described swept volume from described bridge.
According to the third aspect, the invention provides a kind of method that alleviates the circulatory motion that produces with the rotation of harrowing in the concentration tank, described rake comprises a plurality of rake arms that radially extend, each rake arm comprise row extend into described jar in isolated rake sword, described method comprises the retaining device that is provided for slowing down in described jar the fluid rotation that the rotation with described rake produces.
Brief Description Of Drawings
By example the preferred embodiments of the present invention are described now with reference to accompanying drawing, wherein:
Fig. 1 is the plane of separator of the present invention;
Fig. 2 is the profile along the described device of the line 2-2 intercepting of Fig. 1.
The preferred embodiments of the present invention
Advantageous applications of the present invention is mineral processing, separates and the extraction field, and wherein the fine grinding breeze is suspending such as the form with slurry in the water in the concentration of quiescent conditions current downflow and precipitation at suitable liquid medium.Described slurry precipitates from suspension by chemistry and mechanical technology combination.At first, add flocculant and it is sneaked in the suspension.Carefully mixed then suspension is beneficial to solid particle and flocks together, the final big fine and close particle that is settled out from suspension that forms.
With reference to accompanying drawing, described device comprises concentration tank 1, and this jar has right-cylindrical sidewalls and downward-sloping frusto-conical floor.Driving shaft 2 is installed in described jar rotationally between two parties.In a plurality of rake arms 3 each all is firmly attached to described driving shaft, and extends radially outwardly, and is arranged essentially parallel to described tank bottom.Each rake arm supports row and extends axially into described jar of interior rake sword 4.The retaining device of one row straight line baffle plate, 5 forms is fixing with respect to described jar, extends axially in described jar with the radially spaced relation that replaces with 4 complementations of rake sword.Described baffle plate is positioned at the swept volume of described rake sword, is used to slow down the fluid rotation with the rotation generation of described rake.Diametrical service bridge 6 is connected on described jar securely, is used to install described baffle plate.
In use, rake 2 rotates, rake sword 4 each clearance space through forming between the adjacent screen, and inswept gently fluid is sheared the slurry particle, and the water of catching is discharged, and water rises to the surface by the material of shearing.Next can allow the solids to settle on the slurry bed of finer and close thickened pulp 7 formation.Sweeping in the process of rake, baffle plate 5 has slowed down the rotation of the slurry bed of thickened pulp 7 formation, thereby helps shear history.The slurry that concentrates is discharged liquid 8 upper stratas, and described liquid is discharged gradually by the overflow chute 9 that extends around jar.On the other hand, thickened pulp 7 by at the underflow pipe 10 of described pot bottom from following discharge.
The baffle plate that should be appreciated that described device has reduced described rake around described jar of trend that promotes thickened pulp.As a result, alleviate described rake basically thickened pulp is broken or the problem of circulatory motion, thereby increased the efficient of described slurry separating technology.At this on the one hand, the present invention embodies has practical and commercial tangible improvement to prior art.
Although describe the present invention, it will be understood by those of skill in the art that the present invention can be presented as a lot of other forms with reference to specific embodiment.

Claims (28)

1. separator, the rake that comprises columniform concentration tank and be used for dewatering to the thickened pulp bed, described rake is installed in rotation in described jar, described rake comprises a plurality of rake arms that radially extend, each rake arm comprises that row extend into the isolated rake sword in described jar, described separator also comprises the baffle plate that is used to slow down the rotation that thickened pulp in described jar produces with the rotation of described rake, and described rake sword passes in the corresponding gap space between the adjacent screen.
2. separator as claimed in claim 1 is characterized in that being suitable for use as the inspissator of mineral suspensions and slurry.
3. separator as claimed in claim 1 is characterized in that described baffle plate comprises that row are with respect to described jar of fixing baffle plate.
4. separator as claimed in claim 3 is characterized in that described baffle plate extends axially in described jar.
5. separator as claimed in claim 3 is characterized in that described baffle plate is positioned at each in the middle of the rake sword, thereby described baffle plate and rake sword is arranged with the spaced radial relation that replaces.
6. separator as claimed in claim 3 is characterized in that described baffle plate takes between the adjacent rake sword and form in the swept volume at described rake, the rectangle baffle plate.
7. separator as claimed in claim 3 is characterized in that described baffle plate is by making with rake tooth shape shape complimentary geometries plate.
8. separator as claimed in claim 7 is characterized in that described baffle plate made by leg-of-mutton plate.
9. separator as claimed in claim 1 is characterized in that described baffle plate made by rod, line, sheet or plate.
10. separator as claimed in claim 1 it is characterized in that described rake is positioned near near the described tank bottom, and described rake sword extends upward towards described flow surface.
11. separator as claimed in claim 10 is characterized in that described baffle plate is positioned at the top of described rake, and extends through the inswept volume of described rake downwards.
12. separator as claimed in claim 1 is characterized in that comprising with respect to described concentration tank and fixes, and radially extends across the bridge of described concentration tank.
13. separator as claimed in claim 12 is characterized in that described baffle plate is securely fixed on the described bridge, and stretches into downwards in the inswept volume of described rake.
14., it is characterized in that also comprising being positioned at the feed pond that described rake top is used to receive feed fluid as the arbitrary described separator of claim 1-13.
15. method that alleviates circulatory motion in the concentration tank, described concentration tank has the rake that is used for to the dehydration of thickened pulp bed, described rake comprises a plurality of rake arms that radially extend, each rake arm comprises that row stretch into the isolated rake sword in described jar, described method comprises the step of the baffle plate that is provided for slowing down the rotation that thickened pulp in described jar produces with the rotation of described rake, and described rake sword passes in the corresponding gap space between the adjacent screen.
16. method as claimed in claim 15 is characterized in that being suitable for use as the technology of extracting the solid in mineral suspensions and the slurry.
17. method as claimed in claim 15 is characterized in that described baffle plate comprises that row are with respect to described jar of fixing baffle plate.
18. method as claimed in claim 17 is characterized in that described baffle plate extends axially in described jar.
19. method as claimed in claim 17 is characterized in that comprising making described baffle plate be positioned at each in the middle of the rake sword, and the step that described baffle plate and rake sword are arranged with the spaced radial relation that replaces.
20. method as claimed in claim 17 is characterized in that described baffle plate takes between the adjacent rake sword and form in the swept volume at described rake, the rectangle baffle plate.
21. method as claimed in claim 17 is characterized in that described baffle plate is by making with rake tooth shape shape complimentary geometries plate.
22. method as claimed in claim 21 is characterized in that described baffle plate made by leg-of-mutton plate.
23. method as claimed in claim 15 is characterized in that described baffle plate made by rod, line, sheet or plate.
24. method as claimed in claim 15 it is characterized in that described rake is positioned near near the described tank bottom, and described rake sword extends upward towards described flow surface.
25. method as claimed in claim 24 is characterized in that described baffle plate is positioned at the top of described rake, and extends through the inswept volume of described rake downwards.
26. method as claimed in claim 15 is characterized in that comprising providing with respect to described concentration tank and fixes, and radially extend across the step of the bridge of described concentration tank that this bridge supports described baffle plate.
27. method as claimed in claim 26 is characterized in that described baffle plate is securely fixed on the described bridge, and stretches into downwards in the inswept volume of described rake.
28., it is characterized in that also being included in the step that described rake top is provided for receiving the feed pond of feed fluid as the arbitrary described method of claim 15-27.
CNB038063158A 2002-03-19 2003-03-11 Pulp stabilisation apparatus for a thickener Expired - Fee Related CN100384503C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPS1192 2002-03-19
AUPS1192A AUPS119202A0 (en) 2002-03-19 2002-03-19 Pulp stabilisation apparatus for a thickener

Publications (2)

Publication Number Publication Date
CN1642610A CN1642610A (en) 2005-07-20
CN100384503C true CN100384503C (en) 2008-04-30

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CNB038063158A Expired - Fee Related CN100384503C (en) 2002-03-19 2003-03-11 Pulp stabilisation apparatus for a thickener

Country Status (14)

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US (1) US7235182B2 (en)
EP (1) EP1515785A4 (en)
JP (1) JP2005520671A (en)
CN (1) CN100384503C (en)
AU (1) AUPS119202A0 (en)
BR (1) BR0308509B1 (en)
CA (1) CA2479320C (en)
EA (1) EA006341B1 (en)
MX (1) MXPA04008987A (en)
PE (1) PE20030879A1 (en)
PL (1) PL373559A1 (en)
UA (1) UA83799C2 (en)
WO (1) WO2003078020A1 (en)
ZA (1) ZA200407638B (en)

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BRPI0811765A2 (en) * 2007-05-17 2014-11-11 Commw Scient Ind Res Org APPARATUS FOR FLOCULATING SOLID PARTICULARS IN A SOLID-LIQUID CURRENT, FEED WELL, FLOW DIVIDER FOR AN INPUT OF A SEPARATION DEVICE, METHOD OF IMPROVING THE EFFICIENCY OF A SEPARATION, SEPARATION DEVICE.
GB0808685D0 (en) * 2008-05-14 2008-06-18 Dow Corning Anti-friction coating compositions
AP2015008431A0 (en) * 2008-05-15 2015-05-31 Outotec Oyj Improvements in feedwells
AU2009295262B2 (en) * 2008-09-17 2016-01-14 Metso Outotec Finland Oy A method for controlling the disturbance of networked pulp
EP2346587A4 (en) * 2008-09-17 2014-06-25 Outotec Oyj A separation device with dual drives and a method of reducing donutting in a separation device
PE20110878A1 (en) * 2008-09-17 2012-01-04 Outotec Oyj METHOD AND APPARATUS TO ALTER RETICULATED PULP
US20120168364A1 (en) * 2009-06-04 2012-07-05 Evans Thomas S Oil field water recycling system and method
JP5619379B2 (en) * 2009-06-24 2014-11-05 株式会社西原環境 Solid-liquid separator
JP5468316B2 (en) * 2009-06-24 2014-04-09 株式会社西原環境 Solid-liquid separator
CA2714766C (en) 2009-09-14 2014-07-15 Syncrude Canada Ltd. Feedwell for a gravity separation vessel
CN102397714A (en) * 2010-09-09 2012-04-04 上海宝钢化工有限公司 Central torsional force type mud scrape dredge machine
AU2016224861B2 (en) 2015-02-23 2020-10-15 Council Of Scientific & Industrial Research Column thickener and a process thereof for dewatering of iron ore slurry
CN106215471B (en) * 2016-09-06 2018-06-19 淮南矿业(集团)有限责任公司 A kind of modified ore dressing raker thickener
CN108543331B (en) * 2018-03-21 2020-05-12 鲁仕宝 Processing system for treating domestic sewage
CN108556344B (en) * 2018-05-09 2024-03-08 苏州倍丰智能科技有限公司 Flow guiding device
CN110404302B (en) * 2019-07-11 2022-01-11 广州市市政工程设计研究总院有限公司 System and method for recycling carbon source particles in primary sedimentation tank

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Also Published As

Publication number Publication date
CN1642610A (en) 2005-07-20
EA200401220A1 (en) 2005-06-30
WO2003078020A1 (en) 2003-09-25
MXPA04008987A (en) 2004-12-07
US7235182B2 (en) 2007-06-26
AUPS119202A0 (en) 2002-04-18
BR0308509B1 (en) 2012-12-11
US20050121402A1 (en) 2005-06-09
JP2005520671A (en) 2005-07-14
EP1515785A4 (en) 2006-07-12
EP1515785A1 (en) 2005-03-23
PL373559A1 (en) 2005-09-05
EA006341B1 (en) 2005-12-29
CA2479320C (en) 2011-01-04
PE20030879A1 (en) 2003-12-09
CA2479320A1 (en) 2003-09-25
BR0308509A (en) 2005-01-04
ZA200407638B (en) 2005-09-28
UA83799C2 (en) 2008-08-26

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